“大大提前”可以翻译为 "significantly advance" 或 "substantially bring forward"，具体使用哪个表达取决于语境：
"significantly advance"：更强调提前的程度较大，常用于描述时间、进度或计划等方面的提前。例如：
The project was significantly advanced due to efficient teamwork.（由于高效的团队合作，项目大大提前了。）
"substantially bring forward"：同样表示提前，但更侧重于将原本计划的时间点向前移动。例如：
The release date of the new product has been substantially brought forward.（新产品的发布日期已大大提前。）